EPA promulgated amendments on the collection and recovery procedures for particulate matter (PM) from stationary sources.

EPA determined that the Dallas/Fort Worth moderate nonattainment area failed to attain the 1997 eight-hour ozone NAAQS and reclassified the area as a serious ozone nonattainment area; attainment must be reached no later than June 15, 2013.

EPA amended specific provisions in the GHG reporting rule to complement the final rule published on October 28, 2010.

EPA approved Virginia's negative declaration and request for EPA withdrawal of its CAA §§111(d) and 129 plan approval for hospital/medical/infectious waste incinerator (HMIWI) units.

In re Motors Liquidation Corp., No. 09-50026 (REG) (Bankr. S.D.N.Y. Mar. 4, 2011). Settling CAA, CERCLA, and RCRA parties responsible for violations at multiple facilities and sites nationwide must pay $4,613,322 from bonds, with an additional $10.5 million in bond requirements for six non-owned sites, must provide the United States with an allowed general unsecured claim of $36,290,270 for environmental remediation at 29 non-owned sites, and must pay civil penalties for violations at multiregional sites. 

EPA issued a stay until March 14, 2011, of the requirement for chemical manufacturing area sources to comply with the NESHAPs permit program.

EPA issued an SIP call to 13 states whose plans do not apply PSD requirements to GHG-emitting sources and established deadlines for their compliance.

EPA proposed to incorporate American Society for Testing and Materials standards to allow the use of alternatives to mercury-containing industrial thermometers.

EPA is providing notice of, and soliciting written comments 
on, a tentative determination to deny an administrative petition 
submitted by the Sierra Club under RCRA section 7004. EPA issued an 
earlier notice denying this same petition in November 2008. However, 
the Agency at that time failed to comply with notice and comment 
provisions in its regulations. Accordingly, we are now giving the 
public the opportunity to provide comments on this tentative decision. 
This petition requests EPA to reconsider the final rule, ``Regulation 
of Oil-Bearing Hazardous Secondary Materials from the Petroleum Refining Industry 
Processed in a Gasification System to Produce Synthesis Gas,'' 
published in the Federal Register on January 2, 2008. The EPA 
considered the petition, along with information contained in the 
rulemaking docket, and has tentatively decided to deny the petition. In 
a letter from EPA Assistant Administrator Mathy Stanislaus dated 
January 21, 2011, EPA provided the petitioner with its tentative 
decision to deny the petition for reconsideration. The letter explains 
EPA's reasons for tentatively deciding to deny the petition. After 
evaluating all public comments, as well as any other information in the 
rulemaking record, EPA will publish either a final denial of the 
petition or issue a proposed rule to amend or repeal the regulation.

DOE proposed to amend its existing regulations governing compliance with NEPA, particularly its categorical exclusions.